Required Practical: Investigating I–V Characteristics (AQA GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Which instrument measures current in the I–V characteristics practical?
Which instrument measures current in the I–V characteristics practical?
Ammeter
In the practical, what is changed each time a measurement is taken?
In the practical, what is changed each time a measurement is taken?
Length of the wire
What is the formula for resistance?
What is the formula for resistance?
How does resistance relate to wire length?
How does resistance relate to wire length?
Directly proportional
What type of error is a zero error reading?
What type of error is a zero error reading?
Systematic error
How should zero error be handled in this practical?
How should zero error be handled in this practical?
Subtract from all readings
What happens to resistance if wire temperature increases?
What happens to resistance if wire temperature increases?
Resistance increases
Why use a low P.D. in this practical?
Why use a low P.D. in this practical?
To keep current low and reduce heating
When should the current be turned on during the practical?
When should the current be turned on during the practical?
Only when taking readings
What shape is the I–V graph for a resistor?
What shape is the I–V graph for a resistor?
Straight line
How does a diode behave in a circuit?
How does a diode behave in a circuit?
Allows current in one direction only
What happens to a filament bulb's resistance as it heats up?
What happens to a filament bulb's resistance as it heats up?
Resistance increases